Herman leineweber



No. 624,663. Patented Mayv 9, |899..

H. LEINEWEBER.

BICYCLE PUMP.

(Application lad Apr. 14, 1898.)

(No Model.)

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HERMAN LEINEWEBER, OF CHICAGO, ILLINOIS, ASSIGN OR, BY DIRECT AND MESNE ASSIGNMENTS, TO NICHOLAS HEINSEN AND THE HANDY CYCLE PUMP COMPANY, OF SAME PLACE. l 'Y BICYCLE-PUM P.

SPECIFICATION forming part of Letters Patent No. 624,663, dated-May 9, 1'899.

Application filed April 14, 1898.

To all whom it may concern:

Be it known that I, HERMAN LEINEWEBER, a citizen of the United States, residing at South Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Bicycle-Pum ps, of which the following is a specification.

My invention relates to an improvement in the class of hand-operated pumps used for inflating pneumatic tires; and my object is to adapt the small-sized 'hand-pu1n'p to be used like the larger foot-pump, with the efficiency of the latter, but much more easily. I accomplish this by myimproved pistonrod construction, whereby it is rendered extensible and controllable to enable it to be lengthened for operation and to be folded for compactness when out of use.

Referring to the accompanying drawings, Figure lis a view in elevation, partly broken, of an airipump provided with my improvement; and Fig. 2,a sectional view showing the construction of the piston-rod whereby it is rendered extensible and contractible.

A is the pump-cylinder, carrying near one end a hinged foot-bearing B and a flexible tube B', leading from the air-outlet @and provided at its free end with a screw-nozzle p for application to the nipple of the tire to be in- Hated.

C is the piston within the cylinder A and having a rod D extending ont through an end of the cylinder.

With the exception of the piston-rod all the parts thus far described may involve anysuitable or well-known construction, or the pump may involve any construction different from that shown and described, as my invention relates only to the construction of the pistonrod, which may be used with equal advantage with any construction of pneumatic-tire pump.

The rod D is formed insections. The section o, immediately connected with the piston, is tubular and is provided at its outer end with a stop or shoulder o. The section 77 which may be solid, as shown, and is preferably of about the same length as the tubular section, telescopes with the section o and is provided'with a stop 7L on its inner end to engage with the stop 0 and prevent separation of the sections. Adjacent to the stop n' serial No. 677,570. (No model.)

the section nis provided with a screw-thread n2 to be engaged bya nut n3, and on the outer end of the section n is provided a handle 7n.

To adapt the pump for use, the section n of the piston-rod is drawn out of the tubular section and fastened in its withdrawn condition by screwing the nut 72,3 upon the thread n2 to firmly bind the two sections together` In this condition the piston-rod is extended to a length or height which enhances the convenience of operating it.

To contract the piston-rod into the desired compact form for convenience in carrying it, the nut n3 is nnscrewed from the thread n2, when the sectionn may throughout its' entire Unthreaded length slip through the nut and be introduced telescopically into the section o.

With my improvement the ordinary small hand-pump (that shown in the drawings is nearly full size) may be used as effectively as `the well-known so-called foot-pump and much more conveniently and easily.

While thenut and thread means for fastening the telescoping sections of the rod in their withdrawn condition afford the best means for the purpose, I desire to include as within my invention any analogous means for the purpose involving a male thread on one of the piston-rod sections and to cooperate there with an internally-threaded socket on the other section.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a bicycle-pump, the combination of a piston-rod formed of a tubular section o and a section n telescoping therewith and having a thread 77,2, said sections being held togetherv 4against separation by withdrawal, and a nut n3 on the threaded section, substantially as and for the purpose set forth.

2. In a bicycle-pump, the combination of a piston-rod formed ofa tubular section o having a stop o nearits outer end, and a section n telescoping with said Vtubular section and having a stop n on its inner end and a thread n2, and a nut n3 on the threaded section, substantially as and for the purpose set forth.

HERMANl LEINEWEBER.

In presence of- R, T. SPENCER, DAN W. LEE. 

